TL431 Adjustable Shunt Voltage Reference (3 pcs)

TL431 devices are three-terminal adjustable shunt regulators, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between VREF, approximately 2.5 V and 36 V, with two external resistors. These devices have a typical output impedance of 0.2 ?. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies.

Features

- 1% Reference voltage tolerance at 25°C

- Adjustable output voltage: VREF to 36 V

- Operation from -40°C to +125°C

- Typical temperature drift (TL431B)

- 6 mV (C temp)

- 14 mV (I temp, Q temp)

- Low output noise

- 0.2 ? typical output impedance

- Sink-current capability: 1 mA to 100 mA